Suddenly the preview of the navigation graph just dissapear. After a deep research I figure out this problem was triggered right after adding the amplify depend
jquery-inputmask
helmet.js
energy
tikzdevice
liquid-xml
unboxing
zodb
google-url-shortener
hash-collision
mayavi.mlab
shtml
multi-stage-programming
double
kube-scheduler
angular-breadcrumb
unity-test-framework
device-orientation
slate
pangolin
nslookup
angular7
contentpresenter
google-sa360-api
multimodal
servicestack-ioc
smtplib
termux
i18next-http-backend
azurite
android-4.4-kitkat